⚠ Incident
CLEARED: A major incident closed the M4 between J8/9 (Maidenhead) and J10 (Winnersh) from about 9pm on Wed 9 Sept 2026, after a serious collision. It was cleared on the afternoon of Thu 10 Sept 2026: eastbound reopened at about 2pm and westbound by about 4pm.as at 00:17 Fri 11 Sept 2026
M4 Traffic

Latest M4 Traffic News Now

0Accidentsnone reported on the M4 that we are aware of1Roadworks activelive on the M4 right now — see details12Plannedscheduled on the M4 — see details

Live M4 traffic data from National Highways · updated 04:57 Fri 11 Sept 2026

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We hope that the traffic news will help you avoid traffic jams and roadworks.

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14 matching items - showing 1-10 of 14 total available news items

  • A34 NORTH CLOSED AFTER A415

    On the signs now Road closed
    Time now: Friday, 11 September 2026, 04:57

    01:2611 Sept 2026set 4 hrs ago⚠ 4 hrs old✓ Checked by us 04:57

    A34 NORTH
    CLOSED AFTER
    A415

    Overhead sign

    On 3 signs on the M4, including M4 westbound between J11 and J12. On the signs since at least 23:21 Thu 10 Sept 2026.

    We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.
  • Hardshoulder closure

    Active nowRoadworksEastbound
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J17 and J16
    Direction
    Eastbound
    Lanes closed
    Hard shoulder closed
    Reason
    Roadworks
    Schedule
    23:59 Tue 27 Apr 2021 → 18:00 Fri 30 July 2027
    Long-term works - HA planned end: 18:00 Fri 30 July 2027.
  • M4 eastbound Jct 20 to Jct 19 lane closure 183/9-180/9

    PlannedRoadworksEastbound
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J20 and J19
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    21:00 Fri 11 Sept 2026 → 06:00 Sat 12 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 21:00 Fri 11 Sept 202606:00 Sat 12 Sept 2026 starts in about 16 hours · lasts ~9h 00m
  • M4 eastbound Jct 22 to Jct 21 lane closure 193/3-189/1

    PlannedRoadworksEastbound
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J22 and J21
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    21:00 Fri 11 Sept 2026 → 06:00 Sat 12 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 21:00 Fri 11 Sept 202606:00 Sat 12 Sept 2026 starts in about 16 hours · lasts ~9h 00m
  • M4 eastbound lane 1 and 2 closure (59/5 to 53/7)

    PlannedRoadworksEastbound
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound within J10 after A329(M) westbound access
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    21:00 Thu 10 Sept 2026 → 06:00 Fri 11 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 21:00 Thu 10 Sept 202606:00 Fri 11 Sept 2026 underway until 06:00 Fri 11 Sept 2026
  • M4 eastbound lane 1 and 2 closure (54/6 to 49/8)

    PlannedRoadworksEastbound
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J10 and J8
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    21:00 Fri 11 Sept 2026 → 06:00 Sat 12 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 21:00 Fri 11 Sept 202606:00 Sat 12 Sept 2026 starts in about 16 hours · lasts ~9h 00m
  • M4 both directions Jct 15 to 22 - mobile lane closure

    PlannedRoadworksBoth directions
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J18 and J17
    Direction
    Both directions
    Lanes closed
    Lane closures
    Reason
    Maintenance work
    Schedule
    20:00 Fri 11 Sept 2026 → 06:00 Sat 12 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Fri 11 Sept 202606:00 Sat 12 Sept 2026 starts in about 15 hours · lasts ~10h 00m
  • hard shoulder closure

    PlannedRoadworksEastbound
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J18 and J17
    Direction
    Eastbound
    Lanes closed
    Hard shoulder closed
    Reason
    Tree and vegetation cutting work
    Schedule
    08:00 Fri 11 Sept 2026 → 17:00 Fri 11 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 08:00 Fri 11 Sept 202617:00 Fri 11 Sept 2026 starts in about 3 hours · lasts ~9h 00m
  • M4 eastbound lane 1 closure, including on Jct 17 exit slip road

    PlannedUpdateEastbound Slip road closed
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J18 and J17
    Direction
    Eastbound
    Lanes closed
    Slip road closed
    Reason
    Other
    Schedule
    20:00 Fri 11 Sept 2026 → 06:00 Sat 12 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 20:00 Fri 11 Sept 202606:00 Sat 12 Sept 2026 starts in about 15 hours · lasts ~10h 00m
  • M4 eastbound lane 1, 2 and 3 closure (50/0 to 46/0)

    PlannedUpdateEastbound
    Time now: Friday, 11 September 2026, 04:57

    04:5211 Sept 2026reported 5 min ago

    Location
    M4 eastbound between J10 and J8
    Direction
    Eastbound
    Lanes closed
    Lane closures
    Reason
    Other
    Schedule
    21:00 Thu 10 Sept 2026 → 06:00 Fri 11 Sept 2026

    Forecast - not confirmed

    🚧HA scheduled: 21:00 Thu 10 Sept 202606:00 Fri 11 Sept 2026 underway until 06:00 Fri 11 Sept 2026
  • Updated 04:57 Fri 11 Sept 2026

    Powered by National Highways’ Transport Data Feeds.

    How to find the latest M4 traffic news

    Our live M4 feed updates throughout the day with the latest reports on delays, roadworks, accidents, closures and congestion along the M4 motorway. Search by junction number and direction — eastbound or westbound — to focus on the stretch you’re travelling, whether that’s the M25 interchange at Junction 4b, the Severn crossing, the M5 at Almondsbury, or the run into Cardiff and Swansea. A quick check before you leave can save you sitting in avoidable traffic.

    Why M4 traffic news changes along the motorway

    The Department for Transport counts M4 traffic hour by hour and end to end. What it shows is that the latest M4 news means something different depending on where you are joining the motorway today.

    156,491

    M4 vehicles a day

    at the busiest point, junction 4 by Heathrow — the London commuter end of the M4, where 81% of the traffic is cars.

    128,594

    a day at Bristol

    on the M4 at the M4/M5 interchange — fewer vehicles, but 11,167 lorries and 24,926 vans. The same motorway, carrying a very different kind of traffic.

    32%

    the M4 rush-hour swing

    between the busiest M4 hour (7am) and the quietest (11am) at junction 4. The M4 has a genuine peak, so timing your journey actually helps here.

    81

    M4 count points

    measure this motorway from London to South Wales. It is one of the most closely watched roads in the country, and every M4 accident, delay and roadworks report we publish comes from that network.

    So an M4 delay at junction 4 and an M4 delay at junction 19 are not the same problem. That is why this page carries all the latest M4 traffic news together — accidents, crashes, roadworks and lane closures — so you can find the ones on your stretch of the M4 motorway today rather than reading about somebody else’s.

    Hourly figures are from the Department for Transport’s own M4 count point beside junction 4, counted on 3 September 2025, published 20 May 2026. Daily figures are Average Annual Daily Flow for 2025.

    M4traffic.co.uk is dedicated to the latest M4 traffic news, checked every five minutes, 24 hours a day. The M4 meets the M25 at Junction 4b near Heathrow and the M5 near Bristol — see M25 Traffic and M5 Traffic.